Mitsubishi Electric MELSERVO-J2S Series Transition Handbook page 56

Part 2: Review on Replacement of MR-J2S-_A_ with MR-J4-_A_
MR-J2S-_A_
No. Name and function
16 Serial communication function selection - Alarm history
clear
Used to select the serial communication baud rate and
various conditions for communication, and to clear the
alarm
history.
Selection of serial
communication baud rate
0: 9600[bps]
1: 19200[bps]
2: 38400[bps]
3: 57600[bps]
Alarm history clear
0: Disabled
1: Enabled
When alarm history clear is enabled,
the alarm history is cleared at next
power-on.
After the alarm history is cleared, the
setting is automatically disabled (0).
Serial communication selection
0: Use RS-232C
1: Use RS-422
Serial communication response
delayed time
0: Disabled
1: Enabled, reply sent after delay
time of 800μs or more.
17 Analog monitor output
Used to select the signals output to analog monitor 1
(MO1) and analog monitor 2 (MO2).
0 0
MR-J2S-_A_
No.17
(Target digit number)
0 Servo motor speed (±8 V/max. speed) (Note 1)
1 Torque (±8 V/max. torque) (Note 1)
2 Servo motor speed (+8 V/max. speed) (Note 1)
3 Torque (+8 V/max. torque) (Note 1)
4 Current command (±8 V/max. current command)
5 Command pulse frequency (±10 V/500 kpulses/s)
6 Droop pulses (±10 V/128 pulses)
7 Droop pulses (±10 V/2048 pulses)
8 Droop pulses (±10 V/8192 pulses)
9 Droop pulses (±10 V/32768 pulses)
A Droop pulses (±10 V/131072 pulses)
B
Note 1. "Maximum speed" and " Maximum torque" differ depending on the servo motor. Therefore, after the existing motor has been
replaced with an HG motor, the output voltage for "Maximum speed" or " Maximum torque" may differ.
2. Units used for MR-J2S-_A_ are different from those for MR-J4-_A_. Note that the input range of existing equipment needs to
be adjusted.
3. Set "0008" or "0009". When setting the value, note that the input range of existing equipment needs to be adjusted.
Display definition
Bus voltage (+8 V/400 V)
Initial
No.
value
0000h PC18 Alarm history clear selection
Used to clear the alarm history.
PC21 RS-422 communication function selection
Used to select the communication speed. Adjust the
speed to that of the transmitting side (master
station).
RS-232C is not supported.
0100h PC14 Output to analog monitor 1
Refer to the comparison table below for the setting
method.
PC15 Output to analog monitor 2
Refer to the comparison table below for the setting
method.
PC14/PC15
0000
0001
0002
0003
0004
0005 Command pulse frequency (±10 V/4 Mpulses/s) (Note 2)
→
0006 Servo motor-side droop pulses (±10 V/100 pulses) (Note 2)
0007 Servo motor-side droop pulses (±10 V/1000 pulses) (Note 2)
0008 Servo motor-side droop pulses (±10 V/10000 pulses) (Note 2)
0008 or 0009
0009 Servo motor-side droop pulses (±10 V/100000 pulses) (Note 2)
000D
2 - 25
MR-J4-_A_
Name and function
Alarm history clear
0: Disabled
1: Enabled
When "Enabled" is set, the alarm
history is cleared at next power-
on. After the alarm history is
cleared, the setting is
automatically disabled.
Serial communication baud rate
0: 9600 [bps]
1: 19200 [bps]
2: 38400 [bps]
3: 57600 [bps]
4: 11520 [bps]
RS-422 communication response
delay time selection
0: Disabled
1: Enabled (reply sent after delay
time of 800μs or more).
MR-J4-_A_
Display definition
Servo motor speed (±8 V/max. speed) (Note 1)
Torque (±8 V/max. torque) (Note 1)
Servo motor speed (+8 V/max. speed) (Note 1)
Torque (+8 V/max. torque) (Note 1)
Current command (±8 V/max. current command)
(Note 2, 3)
Bus voltage (+8 V/400 V)
Control
Initial
mode
value
0000h P
S
T
0000h P
S
T
0000h P
S
T
0001h